I'm not sure what conclusions we should draw from this (or how long it has been happening), but the large "Fee Market" was generally considered a bad thing for Bitcoin in terms of growing adoption. Ethereum still has cheaper individual transaction fees, but is processing a lot more transactions each day, so the total is adding up.
These are the stats from the last 24 hours. Source: https://bitinfocharts.com/
Bitcoin ($9,370)
Block Reward = 1,800 BTC = $16,866,000
Fees = 32.48 BTC = $304,337.6
Ethereum ($742)
Block Reward = 17,322 ETH = $12,852,924
Fees = 426.88 ETH = $316,744.96
Uncle Inclusion = 128.25 ETH = $95,347
Uncle Fees = 3,130 ETH = $2,322,460